Data:L11n307/PD Presentation

X₆₁₇₂ X_3,13,4,12 X_7,17,8,16 X_9,21,10,20 X_15,9,16,8 X_19,5,20,10 X_13,19,14,18 X_17,11,18,22 X_21,15,22,14 X₂₅₃₆ X_11,1,12,4